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So my radio stopped working on 2008 328i and i took it in to have it diagnosed. And when i did the dealer said it was 85$ to diagnose the problem and said that i also need to replace my air filter and need to reset my code (for maintence schedule).

He said to replace the air filter that it would be 125$ + to reset the code another 64$. Is that normal? I have about 43k miles on my car.

I can't remember how much a replacement air filter was on my 330i but no where near that price I also think the reset the clock "code as they call it" can be done via the OBC or idrive depending on the system you have. Yes, the air filter is kinda a PITA to replace in its location. The $85 to have them just hook the car up to the computer and see the code for the radio issue sounds about right.

It might be time to find a indy BMW repair place now that the warranty is up on your car I would assume.

My dealer charges about $140 to change the A/C Microfilter and $50 (perhaps less) for the engine air filter. Both can be bought off of Amazon or other websites for considerably less money and install easily yourself. The A/C microfilter is a 5 minute job, the engine air filter perhaps 15-20 minutes. I wouldn't let the dealer change any of these unless they do it for free under the maintenance plan.

Again, both filters can be bought for $20-$30 each online. These are just easy money makers for the dealer to keep the Starbucks flowing...